Valve-actuating rod for internal-combustion engines



Feb. 6, 1923.

w. M. ANuERsnN.

VALVE AruAT|-c Roo Fon INYEQNALCOMEUSTIQN ENGINES.

FILED MAY 7,*1921. Vv-

. sox, acitizen of the Patented Feb. 6,' 1923.

UNITED STATES Alnrinvr orrice.

c E :e: TA,

To all when; it may concern:

VBeit known that I 'Wrnmen M;v Annen; A nited Sta residing at Mnneapoliin the county of A en nepin and State of innesota, have invented certainnew 'and useful I rovements in Valve- Actuating Rods Meroni-Combustion"n mes; and I do hereby declare he fol owing to be 'A pertains Ato makeandthe same!A 1 e iiiii.

My resent 'nventionlias' for ifs object 'to provi a, sixnale andelloient automatically adjustable -vu veatuatig i'od combustion enrines, entita-such" lids;` genernll stated, '.'t e 'invention' .consistsof V'the nove ldevices and combinations ofjdeifice's' hereinafter'described ,and defined in theelaiuis.

This improved rod, while capable of more Ygeneral use, isesperlelly desi'ed for and will be found particulnrl" Y pted to en ines of`thegoverhead v ve type,- wherein fung rods` are interposed between the'cam shaft aud the rocker arms, that directly act upon the valve.

One oft-he causes of noise in modern interuel combustion engines is dueto play between the valve rod and the rockers or sunilervalve-actuut-ing elements, und this pounding action is not onlyobjectionable because of the noise produced, but because of theincreased wea-r and decreased eciency caused thereby. The se ltileects.are eseclally noticeable in engines of the overiiead valve type.

M v invention provides en automatically extensible valve rod or push rodthat is entirely mechanical in its operation that will automaticallyextend ritsef to' e up all between ythe cam shaft :md valve, that underno circumstance, prevent proper seat-ing of the vulve, and which,moreover, will automatically compensate for or take rare of thosechanging'conditions canned. by expansion and contraction when the enmeheats up and cools oil.A 'dIhis last noted onction is one of the most,dxfiicult features to accomplish and one that hasA rendered mam'attempts to 'accomplish the results herein enumerated hithertoimpossible.

A commencial form of theimproved rod is illustrated in the accompanyingdrawings, wherein like characters indicate like parts throughout, theseveral views. I

e. full,c1eur, und exact del scriptxon of the invention, such as willen- Referring to the drawings: Fx g 1.xs vertical sectonshowng one oflmtproved valve rods applied to an en- -gxne'o the overhead valve F xg.vlsmafeiuslzuzin through the"r0d e prxlmetely on the'line 2,4-2" of`F1g"."'1,. thzlyglgie ane on am\1l`)cl1"-lnY scale n' 1n". ig. gl `unee own inxl full an dson'xe being brokenawj;

Fig. 8 is 9A o. 'l Emery ivevhbwng a portlon o f the ro lartly inelevation and Pfl'tl'y ns'eetng-n eetnjon the line 1 4 of llefpeetsefthemay be lm'ey we@ einer# Y 5 memes ,the cylmin theedoek Shlfhanei 7 tLief crank iief'riston, 9 *he rbd. 10 the port., wth@ valve 12 theexlmut'v'alve, '13 the exhaust' valve litem, 14;`the`va 1ve s'pu'lg, 16their@ 16 the vnlv'ellfter f wlljh a- 'cani roller 7, i8,l he vulve"`xfterg'iiide,44 19 the valve ifter spring-,fand 2G the shaft', of whichmay be assumed 'to be those of eveil ownoverlleel valve of engine,suclnfor exam le, as found'm in the well lmo'wn uxck automobile The termpush rod will be hereinafter used in a broad sense to include any .kindof o.,velvte-actuating4 rod, which, b end movementfo thrust or otherw"wil open a valve. The push rod, is herein illustrated, is applied in thecustomary place between the valve lifter 16 and the 'rocker arm 15, andit com rises a main rod 21which, at its lower end. as u head 22-seubedin the valve lifter 16 and pressed downward by the spring 1-9.

Shruuk onto or otherwise rgidl secured to the ripper end ofthe rod 21'is tubular extern y threaded extenion Working with threaded enga ementon the threaded portion 'of this tu ular rod extension 23 is n sleeve24, the intermediate portion of which is expanded to form an internalcone surface 25, and the upper portion of which is expanded to affordclearance 'between the same and the upper portion ofthe rod'extension23. The expanded upper portion of the sleeve- 24 is internally threadedund is engaged by the external threads'of e. sleeve extension 26 that isad justably locked to Said sleeve`24 by a lock nut. 27. The upperportion of the rod exother. play isaiitomatically.

contraction." ItJias 'now-been but as.s`oon assaidpl layqis; .upto Stichextent the' l ijingt willtlieoonie iictive to prevent. fort e'iextensionofthe composite milf Thusthepmleterniined ygiip is maintained to thedesired extent st iyto the extent of foiirfone'tliousiindthsv xn'iincli,and ell mit-v1.16 spring ftl rotattheleize .2491111? when play' betweenthe parte-.lijns permitted the! :rod section-.2% to: .move.' outward in'.the

' sleemiexienaieneshiiendell movements A thiI stops o f device.comprising exto tollo'ni.i npnin'dfmaintein `the yextendingmov'eiiients-of siiidgsections. A l zgyvnlve dctuating devicecompijisingextensible sectionsiWi miiF'seetionga friction clutch o rativ'e. tofollow u i and maintain the exten ing movenientsoi said sectionst ando'yielding element nor'miillymiiinteininir wenn between said .sections.3.. A valve -iictnntin ii device comprising extensible sections .Avit

cooperating stops on siiid sections, iiaffriction clutch operativeAtnfollow up andzinuintain the. extending movements of drsections, and uyielding element norninllymuintiiiiiing n gap between ilufsiops ofsaidsections, and which yielding clement icact'sonsaid clutch nndhollsthe mime set until the one section is moved in respect to the'otlieiin`ai direction to extcndszid device..

4. ,A valve actuating puslirod comprising rod sections, 'the `one rodvsection having u vieldngly pressedivedge and the other rod sectionlmvingnn adjustable sleeve with xi.

clutch -sni'fuce co-operiiting with said wedge.

5. .l valve actuating push rod comprising .rod sei-tions, the-one-rml-section having ai vicldngly pressed-:wedge and the other rodsection bovini; ninadjustiilile sleeve with ai clutch sin-facevii-operating with said wedge, and the one rod section liinng ii limitedton-` trzieting movement in inspect to the other.

,taken up iii the.

becomes obviiistlint the-incti-operating stopsmn S0-Operating 'Stops on'.surfaces adapted to combination with ii Wedge'.

sineund .other -rod section having opf [Honig-striking sin'scesno'imallvseparated engagement. to a ordm .T. .viili'tefiictimting pus'h rod.colnprising twoaligned rilsectionsfthe first having `ii sleeve-ivorking with-threaded engagement tliei'epn,.a V,spring tending to'rotate said sleevein ..d'irection toestand the ,len h of the ifodfand snid nternalfclntch surface, a wedge cooperiit` inggjiritlif ,seid -concl-cliitcli surface and seated? in said secondrodection .in-L 1 .orinallypressing said finto contact. with said. conical clutch plisn roucompi-ising two iilignegl rodsections, the first having a sleeve working`with threaded engagement 8. A v'iiive actuating.

. therqxnf jspring! -tending' to rotate said in said second rodsectionfoiuxialgmovement,- n spring Seated 'in said second 'iod sec:tionanil normally fpwasini; said wedge into' contact 'with said coniiolclutch surface, and normally separated gap=forming stops connected tothe two rod sections und adapted in saidsecond rod section. 9.voire-actuating'push rod compris- 'ing tivo aligned rod sections. thefirst having n slceveworking with threaded engagement thereon.I aispring tending.r to rotate said sleeve, in u directionto extend thelength of the rod and said sleeve having-u. conical interniil clutchsurface, 4aV wedge comperating withsiid conical clutch surface andseated 'in said second rod section foi` axial movement., a spring`seated in said second rod section o .nd noi'iuu-lly pressing -sad wedgeinto .contact with said conical clutch surface. and a sleeve' extensionhaving threaded engagement with said sleeve, said sleeve extension undsaid second rod section liiivingjnoi'nially separated gap-forming heengaged by compression of the spring in-'siiid second rod section. l0.ln im internal combustion engine, the

valve sind ii valve-notunling cani, of a cani-inici'uted vulve actuatingpush rod. interposed between said cani and valve and comprising'rod-formingr ele ments: ai. clutch normally holding said rod ,sleevehaving ii conical lll elements against extending movements, said rodelements having co-opei'atinf;` zap-'forniing stop surfaces, iind'aspring incorporated in said push rod normally holdingr said clutvli setund tending tu m'iiintnin said gzip.

11. In un internal combustion e `ne, the combination with ii i'alve andn 'vii ve-actu ating cam, of u. cuni-operated valve actuating push rodinterposed between -said cam und vnlveiind comprising rod-formingelements, a clutch normally holding, siiid i'ocl elements' againstextending movements, said iod'elements having cti-operatinggap-formini.;r stop siii-faces, i slpi'ii'ig incorpora-tedin sind. pushrod -normiil y holdinnr said clutch "set and tending-to maintain saidgap and ii spring operative to extend the r ele ments iis far aspermitted by said clutch.

12.- In an internal combustion engine, the

combiniition with a valve and a valve-actuating cum, of'a cam-operatedvalve actu'i'itin' 4 l Q 'ating connection in excess of said predeter--push rod' interposed between said. cam an valve and comprisingrod-forming elements,

u. clutch normally holding said rod elements against extendingrmovements, said rod elements, having eci-operating ,f 'jap-toi-niing'vstop siii'fuces.'fziiul u spring incorporated in siiidpiisliind'iioinmlLv linldingsziid clutch set andtemling to maintain said gai),the

s ring in said rod having! less tension tlnint uit ieqnii'edtoopensil'id valve.

13. An extensible valve actuating rod lniving cooperating stop surfaces,'a yielding device'operative to normally maintain a 'predeterminedgzipbetween siiid' stop su'rfaces', -sind an'uitomiitic vdevice oratii'e to take 'up all play inexbess of snit p'edetermined gap;

l14:'. In an engine, `'the Combinationwith il valve and ,acam, ,ofavillve-actuuing connection including. an extensiblefvalve actu- 'atingrod having l cio-operating stop surfaces, a yielding device `operativeto normally maintain n predetermined' gap between said stopsurfaoes,andan aiitomatic devicefopeiative totake ii`p` all play' in thevalve-:ictumiiiedgap."

In testimon whereof IA ax lmy si ature. o l ILLIAM M. `ANDERi ON.

